3GP audio (AMR-NB - Adaptive Multi-Rate Narrowband) caps at 8 kHz. To simulate this, the King runs their audio through a telephone EQ: cut everything below 300 Hz and above 3.4 kHz, then add a layer of hiss and "digital chirping" (the result of packet loss).
3GP King is an online pseudonym tied to a video uploader and content creator known for circulating compressed mobile-format (3GP) videos and mixtape-style content. A "YouTube exclusive" suggests a release or series published only on the creator's YouTube channel, often featuring rare clips, compilations, or commentary tailored to that platform's audience and monetization rules. 3gp king youtube exclusive